Pump attachment



Oct. 26 1926. I 1,604,383

' W. G. BRUNS PUMP ATTACHMENT Filed Dec. 9 1925 Patented Oct. 26, 1926.

A in.

\VILLIAM G. BRUNS, OF SIOUX FALLS, SOUTH DAKOTA.

PUIVIP ATTAGHREENT.

Application filed December This invention relates to pumping mechanism for oil and water pumps, and has more particular reference to an attachment t rarefor, the primary object of the invention being to provide such an attachment in order that the operating mechanism for the piston be it an electric motor, gasoline engine, or manual means, will easily raise the piston in order that the load on the up stroke will be reduced and more substantially equalizing the load on the up and down stroke of the piston.

A further object is to provide an attachment of this character wherein the belt from the power means to the pump operating i'uechauism will be prevented from slipping, which is now an existing dii'iiculty in the operation of said pump for the reason tl at the up stroke requires a greater amount of energy than that to which the operating mechanisms are sometimes capable.

it still further object is to provide such .an attachment wherein the speed of the up and down strokes of the pump will be substantially equalized for providing a highly eiiicient operation of the pump and prevent 'arriug of the same, resulting in a longer life of the mechanism.

With the foregoing and other objects in view as the nature of the invention will be better uinlorstood, the same comprises the novel form. combination and arrangement of parts hereinafter more fully described and shown in the accompanying drawings and claimed.

in the drawing, wherein like reference characters indicate corresponding parts throughout both of the views Figure 1 is a front elevation of a conventional pump equipped with my attachment, and

Fig. 2 is a perspective of a member 01 the attachment.

Now having particular reference to the drawing, 5 indicates the stock of a conventional type of pump mechanism, to the up per end of which projects the usual piston rod 6 to which are connected at their upper ends the usual pitmen 7-7 through the medium of cross arm 8 that are in turn eccentrically connected at their lower ends to spur gears 9--9 that are operatively associated. with belt pulley 10, whereby said pitmen may be effectively operated.

My invention per se, constitutes the proand consequently prolonging 9, 1925. Serial No. 74,376.

vision of an arm 11 formed centrally with a head 12 tin u 'h which extends an open mg for receiving the piston rod 6, said rod being slidable through this head in a manner hereinafter more fully described.

The arm 11 is hooked at its opposite ends at 13--13 and secured thereto at each end are relatively elongated contractile coiled springs le -14 that are in turn secured at their lower ends to the pitmen 7-7 as at 15-45.

On the down stroke of the piston rod through provision of the operating mechanism including the pitmen 7'(' the springs lit-14 will be extended whereupon at the beginning of the up stroke of the piston rod said springs will serve to assist the operata mechanism in raising the pitmen. 77 and consequently the piston rod, thus re ducin the load upon the engine or other operating mechanism.

It will thus be seen that I have provided a very highly novel, simple and efficient form of attachments for the pumps of the character shown, that will tend to equalize the load on the engine or other power means during the up and down stroke of the piston, resulting in the efiicient operation of the same, preventing arring oi the pump parts the life of the pump mechanism.

Springs of various tension may is pro vided to meet the load requirements and other changes may be made in the invention without departing from the spirit and scope oi the appended claims.

Havin thus described my invention. what I claim as new and desire to secure by Letters Patent is 1. In an attachment for pumps of the type including a stock through which pro jects a piston rod that is operatively connected at its projecting end with pitmen at the opposite sides of the stock, which are in turn connected at their lower ends to the operating mechanism of the pump, a cross bar through which the upper portion of the piston rod is slidable, and contractile coil springs connected to the opposite ends of the cross bar, and the pitmen respectively for assisting in the upward movement of the pitmen.

2. In icombination with a pump mechanism including a stock through which is movable a piston rod, operating mechanism for the pump including pitmen rods at the opposite sides of the stock, a connection between the upper end of the piston rod and the upper ends of the pitman rods, the lower ends of the pitman rods being opei'zttively associated with the pump actuating mechanism, a member through which the upper portion of the piston rod is slidable, and an elastic connection between the lower portion of each of the pitman rods, and the respec 10 tive side of said member for assisting in the upward movement of the pit-man rods.

in testimony whereof I affix my signature.

WILLIAM G. BRUNS. 

